--- title: "18 month boy shirts — Niche Verdict: Worth a look (56/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/clothing-shoes-jewelry/18-month-boy-shirts" last_updated: "2026-07-10T00:37:49.543Z" locale: en meta: description: "18 month boy shirts shows a fragmented shelf (top 5 take 10% of clicks), but a small market ($70K/yr) keeps it on the watch list." "og:description": "18 month boy shirts shows a fragmented shelf (top 5 take 10% of clicks), but a small market ($70K/yr) keeps it on the watch list." "og:title": "18 month boy shirts — Niche Verdict: Worth a look (56/100) | Amazon United States - Flapen" --- Back to Flapen home # **18 month boy shirts** **Worth a look****56/100 ** 18 month boy shirts shows a fragmented shelf (top 5 take 10% of clicks), but a small market ($70K/yr) keeps it on the watch list. **Market/yr** **$70K** **Growth (1y)** **+247.2%** **Products** **247** **Brands** **40** was 32 a year ago **Sellers** **47** **Price range** **$5.65–$39.86** **Returns** **2.0%** **Rating** **4.7★** **Worth a look** Scored 56/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **4** ×0.30 Growth **81** ×0.30 Competition **100** ×0.20 Quality gap **20** ×0.10 Returns **84** ×0.10 ## **Demand** Weekly Amazon search volume, last 104 weeks — +247.2% year over year. 6K3KPrime Day '24Spike '25Prime Day '25Black Friday '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND No pronounced peak months · busiest ÷ quietest = 1.3× ## **Competition** - Amazon Essentials28% - Gerber14% - Simple Joys by Carter's11% - The Children's Place11% - Garanimals9% - HonestBaby3% - Other (34 brands)24% Clicks spread well past the top 5 (10% combined) — an open shelf where new products get seen. 40 brands and 47 sellers compete here. **Brands** **40 **▲rising was 32 a year ago **Sellers** **47** **Top 5 brand share** **73%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 18 Months](https://m.media-amazon.com/images/I/31J18krDyfL.jpg) [**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 18 Months**](https://www.amazon.com/dp/B0DNJSVL29) Amazon Essentials$14.584.8★4913%—flat 2 ![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 6-9 Months](https://m.media-amazon.com/images/I/31J18krDyfL.jpg) [**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 6-9 Months**](https://www.amazon.com/dp/B0DNJTZRGS) Amazon Essentials$14.194.8★4912%—flat 3 ![Simple Joys by Carters Baby and Toddler Boys 3-Pack Solid Pocket Short-Sleeve Tee Shirts](https://m.media-amazon.com/images/I/41K+kscH4NL.jpg) [**Simple Joys by Carters Baby and Toddler Boys 3-Pack Solid Pocket Short-Sleeve Tee Shirts**](https://www.amazon.com/dp/B09M8YGQDM) Simple Joys by Carter's$14.764.8★24,6312%▼falling 4 ![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Pastel Peach/Cheetah/Stripe 18 Months](https://m.media-amazon.com/images/I/41yNUIORTBL.jpg) [**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Pastel Peach/Cheetah/Stripe 18 Months**](https://www.amazon.com/dp/B0DNJV8FWZ) Amazon Essentials$14.274.8★4911%—flat 5 ![Gerber Baby Girls 3-Pack Short-Sleeve Slip-on Shirts Infant and Toddler Hoodies White 6-9 Months US](https://m.media-amazon.com/images/I/31tXvBQwD-L.jpg) [**Gerber Baby Girls 3-Pack Short-Sleeve Slip-on Shirts Infant and Toddler Hoodies White 6-9 Months US**](https://www.amazon.com/dp/B007C2PWZM) Gerber$9.574.6★7,8681%—flat 6 ![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 12 Months](https://m.media-amazon.com/images/I/31J18krDyfL.jpg) [**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 12 Months**](https://www.amazon.com/dp/B0DNJTVQYG) Amazon Essentials$14.354.8★4911%—flat 7 ![Simple Joys by Carters Baby and Toddler Boys 3-Pack Tank Tops](https://m.media-amazon.com/images/I/410sLkNIdBL.jpg) [**Simple Joys by Carters Baby and Toddler Boys 3-Pack Tank Tops**](https://www.amazon.com/dp/B07ZPQBRDD) Simple Joys by Carter's$15.324.8★10,4031%—flat 8 ![Garanimals Baby Girl Flower T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 6-9 Months - Yellow Pink Light Blue - 4 Pack Set](https://m.media-amazon.com/images/I/31ZnXlWqZXL.jpg) [**Garanimals Baby Girl Flower T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 6-9 Months - Yellow Pink Light Blue - 4 Pack Set**](https://www.amazon.com/dp/B0G452V4WK) Garanimals$23.524.9★1441%▲rising 9 ![Garanimals Baby Boy Solid T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 18 Months - Black Dark Green Dark Beige White - 4 Pack](https://m.media-amazon.com/images/I/31H+QKz3HPL.jpg) [**Garanimals Baby Boy Solid T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 18 Months - Black Dark Green Dark Beige White - 4 Pack**](https://www.amazon.com/dp/B0G4517WWT) Garanimals$23.844.8★1081%—flat 10 ![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 White 6-9 Months](https://m.media-amazon.com/images/I/31uzD4b0DhL.jpg) [**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 White 6-9 Months**](https://www.amazon.com/dp/B0DNJTYLPF) Amazon Essentials$14.284.8★4911%—flat 11 ![Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 12 Months](https://m.media-amazon.com/images/I/31rGj5-Ao5L.jpg) [**Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 12 Months**](https://www.amazon.com/dp/B07GG1P87H) Gerber$16.814.8★56,1051%—flat 12 ![Amazon Essentials Unisex Babies Relaxed-Fit 100% Cotton Long-Sleeve T-Shirts Pack of 3 Oatmeal Heather/Stripe Newborn](https://m.media-amazon.com/images/I/31vHPYxMjWL.jpg) [**Amazon Essentials Unisex Babies Relaxed-Fit 100% Cotton Long-Sleeve T-Shirts Pack of 3 Oatmeal Heather/Stripe Newborn**](https://www.amazon.com/dp/B0DGLMNJG3) Amazon Essentials$16.294.5★3091%—flat 13 ![Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 6-9 Months](https://m.media-amazon.com/images/I/31rGj5-Ao5L.jpg) [**Gerber Baby 8-Pack Short Sleeve Onesies Bodysuits Solid White 6-9 Months**](https://www.amazon.com/dp/B07GG1ZG8W) Gerber$16.824.8★56,1051%—flat 14 ![Amazon Essentials Baby Boys Baby Boys and Toddler 2-Pack T-Shirts Light Blue/Stripe 18 Months](https://m.media-amazon.com/images/I/41aX7A8-ohL.jpg) [**Amazon Essentials Baby Boys Baby Boys and Toddler 2-Pack T-Shirts Light Blue/Stripe 18 Months**](https://www.amazon.com/dp/B0DNJGG71R) Amazon Essentials$14.354.8★2231%—flat 15 ![Gerber Baby 6-Pack Long-Sleeve Side-Snap Mitten-Cuff Shirt white Newborn](https://m.media-amazon.com/images/I/41cSnvkpIJL.jpg) [**Gerber Baby 6-Pack Long-Sleeve Side-Snap Mitten-Cuff Shirt white Newborn**](https://www.amazon.com/dp/B07GG949PB) Gerber$17.474.5★2,1521%—flat **~~Showing 15 of 247 — show all ~~** ## **Product shelf** All 247 tracked products in this niche. Top sellersNewestTrending [![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 18 Months](https://m.media-amazon.com/images/I/31J18krDyfL.jpg)**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 18 Months** Amazon Essentials**$14.58**4.8★491 reviews](https://www.amazon.com/dp/B0DNJSVL29) [![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 6-9 Months](https://m.media-amazon.com/images/I/31J18krDyfL.jpg)**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 6-9 Months** Amazon Essentials**$14.19**4.8★491 reviews](https://www.amazon.com/dp/B0DNJTZRGS) [![Simple Joys by Carters Baby and Toddler Boys 3-Pack Solid Pocket Short-Sleeve Tee Shirts](https://m.media-amazon.com/images/I/41K+kscH4NL.jpg)**Simple Joys by Carters Baby and Toddler Boys 3-Pack Solid Pocket Short-Sleeve Tee Shirts** Simple Joys by Carter's**$14.76**4.8★24,631 reviews](https://www.amazon.com/dp/B09M8YGQDM) [![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Pastel Peach/Cheetah/Stripe 18 Months](https://m.media-amazon.com/images/I/41yNUIORTBL.jpg)**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Pastel Peach/Cheetah/Stripe 18 Months** Amazon Essentials**$14.27**4.8★491 reviews](https://www.amazon.com/dp/B0DNJV8FWZ) [![Gerber Baby Girls 3-Pack Short-Sleeve Slip-on Shirts Infant and Toddler Hoodies White 6-9 Months US](https://m.media-amazon.com/images/I/31tXvBQwD-L.jpg)**Gerber Baby Girls 3-Pack Short-Sleeve Slip-on Shirts Infant and Toddler Hoodies White 6-9 Months US** Gerber**$9.57**4.6★7,868 reviews](https://www.amazon.com/dp/B007C2PWZM) [![Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 12 Months](https://m.media-amazon.com/images/I/31J18krDyfL.jpg)**Amazon Essentials Unisex Babies Short Sleeve T-Shirts Pack of 3 Oatmeal Heather/White/Stripe 12 Months** Amazon Essentials**$14.35**4.8★491 reviews](https://www.amazon.com/dp/B0DNJTVQYG) [![Simple Joys by Carters Baby and Toddler Boys 3-Pack Tank Tops](https://m.media-amazon.com/images/I/410sLkNIdBL.jpg)**Simple Joys by Carters Baby and Toddler Boys 3-Pack Tank Tops** Simple Joys by Carter's**$15.32**4.8★10,403 reviews](https://www.amazon.com/dp/B07ZPQBRDD) [![Garanimals Baby Girl Flower T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 6-9 Months - Yellow Pink Light Blue - 4 Pack Set](https://m.media-amazon.com/images/I/31ZnXlWqZXL.jpg)**Garanimals Baby Girl Flower T-Shirt - Short Sleeve Tees - Kids Casual Crew Neck - Size 6-9 Months - Yellow Pink Light Blue - 4 Pack Set** Garanimals**$23.52**4.9★144 reviews](https://www.amazon.com/dp/B0G452V4WK) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Size-Overall**21% *“Fit great”* **Quality-Overall**19% *“The shirts look good and good quality”* **Soft Feel**11% *“Soft to touch”* **Material Quality**7% *“Good material”* **Comfort-Overall**6% *“comfortable”* **Value For Money**5% *“Good Value”* **Color**3% *“lots of colors”* **Gifting Purpose**2% *“Christmas gift”* **Durability**2% *“They are very durable”* **Advertised Vs Actual Product**1% *“received exactly what was advertised”* ### **What buyers complain about ** **Size-Overall**28% *“Runs smaller then actual size guide says definitely size up”* **Shrinkage Resistance**5% *“RUN SMALL / SHRINK TOO MUCH”* **Value For Money**4% *“$100 for 5 is out of budget”* **Quality-Overall**4% *“Poor make”* **Stretchability/Expandability/Elasticity**3% *“it does not stretch a lot however”* **Neck Fit**2% *“Neck hole too large”* **Material Quality**2% *“cloth is not good”* **Thickness**2% *“it is thick”* **Allergies**1% *“My toddler suffers from eczema”* **Durability**1% *“not as durable as I hoped”* #### **Top return reasons**- Size-Overall66% - Length9% - Material Quality4% - Sleeve Fit3% - Advertised Vs Actual Product2% - Value For Money2% - Color2% - Quality-Overall1% - Chest Fit1% - Thin1%